System and method of mobile printing using near field communication

ABSTRACT

A method of mobile printing using near field communication (NFC) includes executing a mobile printing application installed in a mobile device; setting a wireless connection for data transmission between the mobile device and an image forming apparatus by performing NFC tagging on the image forming apparatus with the mobile device; and automatically performing a function corresponding to a status of the mobile printing application when NFC tagging is performed.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of a prior applicationSer. No. 14/265,639, filed on Apr. 30, 2014, which has issued as U.S.Pat. No. 9,459,822 on Oct. 4, 2016 and claimed the benefit under 35U.S.C. § 119(a) of a Korean patent application filed on Jun. 3, 2013 inthe Korean Intellectual Property Office and assigned Serial number10-2013-0063700, the entire disclosure of which is hereby incorporatedby reference.

TECHNICAL FIELD

One or more exemplary embodiments of the present general inventiveconcept relate to a system and method of mobile printing using nearfield communication (NFC).

BACKGROUND

As mobile communication technologies are developed and mobilecommunication devices have become popularized, mobile devices such assmartphones, tablet personal computers (PCs), and personal digitalassistances (PDAs) have begun to replace existing PCs. In the field ofimage forming apparatuses such as printers, scanners, faxes, copyingmachines, and multifunction printers (MFPs), research is currently beingconducted into a technology to allow a mobile device to directly use animage forming apparatus without accessing a PC.

Specifically, in order to overcome interface restrictions of mobiledevices and to ensure mobility, wireless communication is preferredbetween an image forming apparatus and a mobile device. However, atypical wireless connection process is complicated, is inconvenient, anddemands users to have preliminary knowledge of a wireless network.

In addition, since a mobile application provided on a mobile device touse an image forming apparatus uses an environment different from anexisting PC environment, a user who is not used to manipulating themobile application may find it difficult to use the image formingapparatus.

SUMMARY OF THE INVENTION

One or more exemplary embodiments of the present general inventiveconcept include a system and method of allowing a user to convenientlyand easily perform mobile printing by using near field communication(NFC).

Additional features and utilities of the present general inventiveconcept will be set forth in part in the description which follows and,in part, will be obvious from the description, or may be learned bypractice of the general inventive concept.

Exemplary embodiments of the present general inventive concept provide amethod of mobile printing using near field communication (NFC), themethod including executing a mobile printing application installed in amobile device, setting a wireless connection for data transmissionbetween the mobile device and an image forming apparatus by performingNFC tagging on the image forming apparatus with the mobile device, andautomatically performing a function corresponding to a status of themobile printing application when NFC tagging is performed.

The mobile printing application may include a home menu to manage theimage forming apparatus, and if NFC tagging is performed while the homemenu is selected, the automatic performing of the function may includereceiving status information from the image forming apparatus at themobile device, and displaying the status information on a screen.

The mobile device may cyclically receive the status information from theimage forming apparatus so as to update the status information.

The method may further include changing settings of the image formingapparatus by using the mobile printing application.

The changing of the settings of the image forming apparatus may includedisplaying at the mobile device a screen to manage the setting of theimage forming apparatus according to a selection of a user, andtransmitting from the mobile device a command corresponding to the inputto the image forming apparatus via the set wireless connection, if aninput to change the setting of the image forming apparatus is receivedfrom the user.

If the mobile printing application is executed, the home menu may beselected by default.

The image forming apparatus wirelessly connected via NFC tagging whilethe home menu is selected on the mobile printing application may be setas an apparatus to perform all mobile printing operations.

The setting of the wireless connection may include receiving at themobile device information of the image forming apparatus, which isstored in the NFC tag by performing NFC tagging on the image formingapparatus, and setting a Wi-Fi Direct connection between the mobiledevice and the image forming apparatus by using the received informationof the image forming apparatus.

The information of the image forming apparatus may include a mediaaccess control (MAC) address, and the setting of the Wi-Fi Directconnection may include searching for an apparatus corresponding to thereceived MAC address, transmitting a request for the Wi-Fi Directconnection to the image forming apparatus if the image forming apparatusis found, and accepting the Wi-Fi Direct connection at the image formingapparatus.

The information of the image forming apparatus may further include apersonal identification number (PIN), the transmitting of the requestfor the Wi-Fi Direct connection may include transmitting the receivedPIN, and the accepting by the image forming apparatus of the Wi-FiDirect connection may include the image forming apparatus accepting theWi-Fi Direct connection if it is determined that the PIN received fromthe mobile device is identical to the PIN set to the image formingapparatus.

A non-transitory computer-readable recording medium may containcomputer-readable codes as a program to execute the method.

Exemplary embodiments of the present general inventive concept alsoprovide a system of mobile printing using near field communication(NFC), the system includes a mobile device in and on which a mobileprinting application is installed and executed, and an image formingapparatus wirelessly connected to the mobile device via NFC tagging soas to perform mobile printing. The mobile device and the image formingapparatus perform a function corresponding to a status of the mobileprinting application when NFC tagging is performed.

The mobile printing application may include a home menu to manage theimage forming apparatus, and if NFC tagging is performed while the homemenu is selected, the mobile device may request the image formingapparatus for status information and receive and display the statusinformation on a screen.

The mobile device may cyclically request the image forming apparatus forthe status information so as to receive and display the statusinformation on the screen.

Settings of the image forming apparatus may be changeable by using themobile printing application.

The mobile device may display a screen to manage the settings of theimage forming apparatus according to a selection of a user and, if aninput to change the settings of the image forming apparatus is receivedfrom the user, transmit a command corresponding to the input to theimage forming apparatus via the set wireless connection.

If the mobile printing application is executed on the mobile device, thehome menu may be selected by default.

The image forming apparatus wirelessly connected via NFC tagging whilethe home menu is selected on the mobile printing application may be setas an apparatus to perform all mobile printing operations.

The mobile device may approach an NFC tag attached to the image formingapparatus so as to receive information of the image forming apparatus,which is stored in the NFC tag, and set a Wi-Fi Direct connection to theimage forming apparatus by using the received information of the imageforming apparatus.

The information of the image forming apparatus may include a mediaaccess control (MAC) address, the mobile device may search for anapparatus corresponding to the received MAC address, and request theimage forming apparatus for the Wi-Fi Direct connection if the imageforming apparatus is found, and the image forming apparatus may acceptthe Wi-Fi Direct connection.

The information of the image forming apparatus may further include apersonal identification number (PIN), the mobile device may transmit thereceived PIN while requesting the Wi-Fi direct connection, and the imageforming apparatus may accept the Wi-Fi Direct connection if it isdetermined that the PIN received from the mobile device is identical tothe PIN set to the image forming apparatus.

Exemplary embodiments of the present general inventive concept alsoprovide a method of mobile printing using near field communication(NFC), the method including displaying a first image on a screen of amobile device, the first image corresponding to a mobile printingapplication installed in the mobile device and including a status of themobile printing application, and displaying a second image on the screenwhen an NFC tagging is performed on the image forming apparatus by themobile device, the second image corresponding to a function of an imageforming apparatus performed automatically according to the status of themobile printing application when the NFC tagging is performed.

The first image may include an area to receive a user input to set up awireless connection between the mobile device and the image formingapparatus. Performing the function of the image forming apparatus mayinclude establishing the wireless connection set up according to theuser input on the first image.

The wireless connection may be established according to connectioninformation received from the NFC tagging.

Performing the function of the image forming apparatus may includereceiving current status information of the image forming apparatus fromthe image forming apparatus after the NFC tagging is performed. Thesecond screen may display the received current status information of theimage forming apparatus.

The second screen may be a default screen of the mobile printingapplication after the NFC tagging is performed.

The second screen may further include information of the image formingapparatus received when the NFC tagging is performed.

The method may further include configuring the status of the mobileprinting application by changing the first image prior to the NFCtagging.

The method may further include displaying a third image on the screenprior to displaying the first image, the third image indicating a stateof a wireless function of the mobile device.

The first image may further correspond to a status of a wirelessconnection between the mobile device and the image forming apparatus.

The method may further include searching for the image forming apparatusaccording to an input on the first image.

The method may further include connecting the mobile device to the imageforming apparatus prior to performing the NFC tagging, checking aversion of firmware of the image forming apparatus at the mobile device,and updating the firmware to support a wireless connection via automatictransmission of a Personal Identification Number (PIN).

Updating the firmware may include receiving an updated version of thefirmware at the mobile device, and transmitting the updated version ofthe firmware from the mobile device to the image forming apparatus.

Updating the firmware may include requesting from the mobile device fora server to transmit an updated version of the firmware to the imageforming apparatus.

Exemplary embodiments of the present general inventive concept alsoprovide a mobile device to perform mobile printing using near fieldcommunication (NFC), the mobile device including a screen, and a controlunit to control the screen to display a first image, the first imagecorresponding to a mobile printing application installed in the mobiledevice and including a status of the mobile printing application, and tocontrol the screen to display a second image when an NFC tagging isperformed on the image forming apparatus by the mobile device, thesecond image corresponding to a function of an image forming apparatusperformed automatically according to the status of the mobile printingapplication when the NFC tagging is performed.

BRIEF DESCRIPTION OF THE DRAWINGS

These and/or other features and utilities of the present generalinventive concept will become apparent and more readily appreciated fromthe following description of the embodiments, taken in conjunction withthe accompanying drawings of which:

FIG. 1 is a diagram illustrating a system of mobile printing using nearfield communication (NFC), according to an exemplary embodiment of thepresent general inventive concept;

FIG. 2 is a diagram illustrating a detailed process of setting a Wi-FiDirect connection between a mobile device and a multifunction printer(MFP) via NFC tagging, according to an exemplary embodiment of thepresent general inventive concept;

FIG. 3 is a diagram illustrating a screen of a mobile printingapplication, according to an exemplary embodiment of the present generalinventive concept;

FIGS. 4A, 4B, and 4C are diagrams illustrating screens of a mobileprinting application displayed in order to connect a mobile device andan MFP, according to an exemplary embodiment of the present generalinventive concept;

FIGS. 5A, 5B, 5C, 5D, and 5E are diagrams illustrating various screenswhen a home menu is selected from among main menus of a mobile printingapplication, according to an exemplary embodiment of the present generalinventive concept;

FIGS. 6A, 6B, and 6C illustrate screens to describe a method of managingsettings of an MFP by using a mobile printing application, according toan exemplary embodiment of the present general inventive concept;

FIGS. 7A, 7B, and 7C are diagrams illustrating screens when print, scan,and fax menus are selected from among main menus of a mobile printingapplication, according to an exemplary embodiment of the present generalinventive concept;

FIG. 8 is a diagram illustrating a hardware configuration of a mobiledevice, according to an exemplary embodiment of the present generalinventive concept;

FIGS. 9, 10, 11, 12, and 13 are flowcharts of methods of mobile printingusing NFC, according to exemplary embodiments of the present generalinventive concept;

FIGS. 14 and 15 are diagrams illustrating processes of updating firmwareof an MFP in a system of mobile printing using NFC, according toexemplary embodiments of the present general inventive concept;

FIG. 16 is a diagram illustrating a hardware configuration of a mobiledevice, according to another exemplary embodiment of the present generalinventive concept; and

FIGS. 17 and 18 are flowcharts of methods of updating firmware of an MFPin a system of mobile printing using NFC, according to exemplaryembodiments of the present general inventive concept.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Reference will now be made in detail to the embodiments of the presentgeneral inventive concept, examples of which are illustrated in theaccompanying drawings, wherein like reference numerals refer to the likeelements throughout. The embodiments are described below in order toexplain the present general inventive concept while referring to thefigures.

Initially, a technology of mobile printing using near fieldcommunication (NFC) will be described.

Basically, when a mobile device 100 having an NFC module 110 approachesa multifunction printer (MFP 200 ) and performs NFC tagging forshort-distance wireless communication, the mobile device 100 obtainsinformation of the MFP 200 and sets a wireless connection for datatransmission and reception to the MFP 200 by using the obtainedinformation. In this case, the wireless connection for data transmissionand reception between the mobile device and the MFP 200 may be set byusing, for example, Bluetooth, Wi-Fi, or Wi-Fi Direct. In the followingdescription and exemplary embodiments described herein, it is assumedthat Wi-Fi Direct is used. However, it will be understood that any othershort-distance wireless communication may be used instead of Wi-FiDirect without departing from the present general inventive concept.

If a Wi-Fi Direct connection is set between the mobile device 100 andthe MFP 200, the mobile device 100 transmits to the MFP 200 via theWi-Fi Direct connection an image data file or a command to perform anoperation, and the MFP 200 performs an image forming operation accordingto the received command. In this case, besides the MFP 200, variousimage forming apparatuses such as for example a printer, a scanner, anda fax machine may also be used. However, it is assumed hereinafter thatan MFP 200 is used.

FIG. 1 is a diagram illustrating a system of mobile printing using NFC,according to an exemplary embodiment of the present general inventiveconcept. A mobile device 100 includes an NFC module 110, and an MFP 200includes an NFC tag 210. In general, for cost reduction, the NFC tag 210included in the MFP 200 supports passive NFC. In this case, the NFC tag210 stores information of the MFP 200, for example, a media accesscontrol (MAC) address and a device name of the MFP 200. Since passiveNFC allows only reading of information stored in the NFC tag 210, theoperation of NFC tagging involves a one-way communication, in which anNFC module reads information from an NFC tag. Accordingly, if NFCtagging is performed (operation S101), the mobile device 100 receivesthe information of the MFP 200 (operation S102), which is stored in theNFC tag 210 of the MFP 200, and sets a Wi-Fi Direct connection for datacommunication to the MFP 200 by using the received information of theMFP 200 (operation S103).

FIG. 2 is a diagram illustrating a detailed process of setting a Wi-FiDirect connection between a mobile device 100 and an MFP 200 via NFCtagging, according to an exemplary embodiment of the present generalinventive concept. If the mobile device 100 performs an NFC-tagging onthe MFP 200 (operation S201), the mobile device 100 receives a MACaddress, a device name, and a personal identification number (PIN) ofthe MFP 200 from an NFC tag 210 attached to the MFP 200 (operationS202). The mobile device 100 searches for a device having a MAC addressidentical to the MAC address received from the NFC tag (operation S203).If the MFP 200 to which the NFC tag 210 is attached is found, the mobiledevice 100 attempts to set a Wi-Fi Direct connection to the found MFP200 (operation S204).

In this case, according to the Wi-Fi Direct standards, the Wi-Fi Directconnection may be set if a user presses a Wi-Fi Protected Setup (WPS)button included in the MFP 200, or inputs a PIN via an input interfaceof the MFP 200. Alternatively, the Wi-Fi Direct connection may beautomatically set even if a user neither presses a WPS button nor inputsa PIN.

In more detail, if a PIN required for the Wi-Fi Direct connection ispreviously encrypted and stored in the NFC tag 210 attached to the MFP200, the mobile device 100 may receive the encrypted PIN from the NFCtag 210 when NFC tagging is performed, and may transmit the PIN to theMFP 200 when the Wi-Fi Direct connection is attempted to be set, therebyautomatically setting the Wi-Fi Direct connection. However, sinceautomatic transmission of a PIN does not follow the Wi-Fi Directstandards, for the above-described method, firmware of the MFP 200 mayneed to be updated. Methods of updating firmware of the MFP 200 will bedescribed in detail below with reference to FIGS. 14-18.

If the Wi-Fi Direct connection is set between the mobile device 100 andthe MFP 200 (operation S205), the mobile device 100 receives from theMFP 200 device capability information indicating available operations(operation S206).

If the Wi-Fi Direct connection is set between the mobile device 100 andthe MFP 200 as described above, the mobile device 100 may transmit viathe Wi-Fi Direct connection to the MFP 200 a command to perform an imageforming operation such as print, scan, or fax operations, or image datato be printed, such that mobile printing may be performed. Also, themobile device 100 may receive via the Wi-Fi Direct connection from theMFP 200 data or a command required for mobile printing.

A mobile printing application to control mobile printing may beinstalled in the mobile device 100. Such a mobile printing applicationis generally developed by a manufacturer of the MFP 200 and is providedto users. A mobile printing application will now be described in detail.

FIG. 3 is a diagram illustrating a screen 301 of a mobile printingapplication, according to an exemplary embodiment of the present generalinventive concept. The screen 301 may be a default screen that isdisplayed when the Wi-Fi Direct connection is established between themobile device 100 and the MFP 200. Referring to FIG. 3, the screen 301of the mobile printing application may include a main menu display area310, a sub tap area 320, and a content display area 330.

The main menu display area 310 displays a plurality of main menus, suchas for example home, print, scan, and fax menus 311, 312, 313, and 314.Functions of the main menus will be described in detail below. The subtap area 320 displays a device name of an MFP 200 currently connected toa mobile device 100. If no MFP 200 is currently connected, a messagesuch as “No Selected Printer” may be displayed. A device settings button321 in the sub tap area 320 is a button to activate a menu to check andmanage settings of the connected MFP 200. A method of managing settingsof an MFP 200 by using the device settings button 321 will be describedin detail below.

The content display area 330 displays contents corresponding to aselected main menu. In FIG. 3, since the home menu 311 is selected fromamong the main menus, the content display area 330 displays a statusscreen 331 of the MFP 200, an information button 332, an input traybutton 333, and a print report button 334. Detailed descriptions thereofwill be provided below.

A method of utilizing a mobile printing application in a system ofmobile printing using NFC will now be described in detail.

FIGS. 4A through 4C are diagrams illustrating screens 400 a through 400c of a mobile printing application displayed in order to connect amobile device 100 and an MFP 200, according to an exemplary embodimentof the present general inventive concept. Elements 410-414, 420-421, and430-434 as illustrated in FIGS. 4A through 4C are the same ascorresponding elements 310-314, 320-321, and 330-334, already describedabove with reference to FIG. 3, and so a detailed description thereofwill be omitted.

If a mobile printing application is executed on the mobile device 100,the mobile device 100 determines whether a Wi-Fi function is on. If theWi-Fi function is off, the screen 400 a of FIG. 4A is displayed. Area401 of FIG. 4A displays a message indicating that the Wi-Fi functionshould be on to use the mobile printing application, and area 402displays a button to select an on or off state of the Wi-Fi function.Otherwise, if the Wi-Fi function of the mobile device 100 is already on,the screen 400 a of FIG. 4A is not displayed and the screen 400 b ofFIG. 4B is displayed.

If a user selects “Yes” or “No” on the screen 400 a of FIG. 4A, thescreen 400 b of FIG. 4B is displayed while the Wi-Fi function is on oroff. In this case, if the user selects “No” and thus the Wi-Fi functionis off, the message displayed on area 401 may be displayed again laterwhen the Wi-Fi function should be on.

On the screen 400 b of FIG. 4B, since no MFP 200 is currently connectedto the mobile device 100, a sub tap 420 displays a message such as “NoSelected Printer”. Area 435 of a content display area 430 displays amessage to ask whether to search for a printer (including for example anMFP 200), and area 436 displays a button to confirm to search for aprinter (MFP 200).

On the screen 400 b of FIG. 4B, if a user touches the button displayedon area 432, the mobile device 100 searches for a printer. In this case,the user may select an MFP 200 to be connected, on an MFP 200 listpreviously stored in the mobile device 100, or by approaching andperforming NFC tagging on the MFP 200. A process of performing NFCtagging on and setting a Wi-Fi Direct connection to an MFP 200 hasalready been described above in detail.

FIG. 4C illustrates a display screen 400 c of the mobile device 100 whena Wi-Fi Direct connection is set between the mobile device 100 and anMFP 200. A main menu display area 410 displays that a home menu 411 iscurrently selected from among main menus, and a sub tap area 420displays a device name of a currently connected MFP 200. A contentdisplay area 430 displays contents corresponding to the selected mainmenu.

From among the main menus, the home menu 411 is a menu to allow a userto check and manage information of the MFP 200, for example, its statusand settings. A mobile printing application according to an exemplaryembodiment of the present general inventive concept increases userconvenience by including the home menu 411 as a main menu so as to allowthe user to check information of an MFP 200 and to manage the MFP 200 byusing the mobile printing application. From among the main menus, print,scan, and fax menus 412, 413, and 414 are menus to perform print, scan,and fax operations, respectively. Screens of the mobile printingapplication when these menus are selected will be described below.

On the screen 400 c of FIG. 4C, since the home menu 411 is selected fromamong the main menus, area 431 displays a status of the connected MFP200, area 432 displays an information button, area 433 displays an inputtray button, and area 434 displays a print report button.

According to another exemplary embodiment of the present generalinventive concept, a function may be automatically performed accordingto NFC tagging. In other words, if a mobile device performs NFC taggingon an MFP 200, a function corresponding to a status of a mobile printingapplication at a point of time when NFC tagging is performed may beautomatically performed. For example, a command corresponding to a menuor a file selected on the mobile printing application when NFC taggingis performed may be transmitted to the MFP 200. In other words, acommand corresponding to a main menu of the mobile printing application,which is selected when NFC tagging is performed, for example, the home,print, scan, or fax menu 411, 412, 413, or 414, may be transmitted tothe MFP 200.

Accordingly, as illustrated in FIG. 4C, if NFC tagging is performedwhile the home menu 411 is selected from among the main menus, themobile device 100 sets a Wi-Fi Direct connection to the MFP 200 and thenautomatically transmits to the MFP 200 a command requesting statusinformation, and the MFP 200 transmits the status information to themobile device 100 in response to the request. The mobile device 100receives and displays the status information on a screen so as to allowa user to check the status of the MFP. In this case, as illustrated inFIG. 4C, the displayed status information of the MFP 200 may include,for example, a graphic image of the MFP 200, a ready or error status,and a toner indicator. If the user requests other information via abutton input, the other information may be displayed. Also, if the Wi-FiDirect connection is set between the mobile device 100 and the MFP 200via NFC tagging while the home menu 411 is selected, the connected MFP200 is set as a device to perform print, scan, and fax operations.

The status information of the MFP 200 displayed on the mobile device 100may be updated cyclically or at a certain point of time. For example,while the mobile device 100 and the MFP 200 maintain the Wi-Fi Directconnection, the status information may be repeatedly updated in acertain cycle and may be displayed on the mobile device 100.Alternatively, the status information of the MFP 200 may be received andupdated only when the mobile device 100 performs NFC tagging on the MFP200.

Cases when the other menus are selected will now be described. If NFCtagging is performed while the print menu 412 is selected on the mobileprinting application, the mobile device 100 sets a Wi-Fi Directconnection to the MFP 200 and sets the connected MFP 200 as an MFP for aprint operation. Alternatively, if NFC tagging is performed while theprint menu 412 is selected on the mobile printing application and acertain image is displayed on a screen of the mobile device 100, themobile device 100 may automatically transmit to the MFP 200 a data fileof the image displayed on the screen and a command requesting to printthe image, such that a print operation may be automatically performed.

Likewise, if NFC tagging is performed while the scan menu 413 or the faxmenu 414 is selected from among the main menus of the mobile printingapplication, a preset function may be automatically performed.

The mobile device 100 may be set in such a way that the home menu 411 isselected by default when the mobile printing application is executed.Alternatively, if the mobile device 100 performs NFC tagging on the MFP200 while the mobile printing application is not executed, the mobileprinting application may be automatically executed. In this case, themobile device 100 may be set in such a way that the home menu 411 isselected from among main menus and thus the status information of theMFP 200 is displayed. In other words, a user may execute the mobileprinting application and may check the status information of the MFP 200by merely allowing the mobile device 100 to perform NFC tagging on anNFC tag 210 of the MFP 200.

An operation when a home menu is selected from among main menus of amobile printing application in a system of mobile printing using NFC,according to an exemplary embodiment of the present general inventiveconcept, will now be described in detail. FIG. 5A through 5E arediagrams illustrating various screens 500 a through 500 e when a homemenu is selected from among main menus of a mobile printing application,according to an exemplary embodiment of the present general inventiveconcept. Elements 510-514, 520-521, and 530-534 as illustrated in FIGS.5A through 5E are the same as corresponding elements 310-314, 320-321,and 330-334, already described above with reference to FIG. 3, and so adetailed description thereof will be omitted.

FIG. 5A illustrates a screen 500 a when a home menu 511 is selected fromamong main menus of a mobile printing application, according to anexemplary embodiment of the present general inventive concept. Thescreen 500 a illustrated in FIG. 5A may be a default screen when thehome menu 511 is selected. As described above in relation to FIG. 4C, acontent display area 530 displays a status of a connected MFP 200.Specifically, in this case, area 535 displays a current status of theMFP 200 as a ready status or an error status. If the MFP 200 is in aready status and thus is enabled to perform an operation such as a printoperation, “Ready” is displayed as illustrated in FIG. 5A. If the MFP200 has an error and thus is unable to perform an operation, “Error” isdisplayed as illustrated in screen 500 b, illustrated in FIG. 5B.

A user may obtain information about supplies. If the user touches asupplies information button 536 of FIG. 5A, a mobile device 100 maydisplay a screen 500 c of FIG. 5C, and area 531 may display model namesof toners installed in the MFP 200, and contact information of a placewhere the toners may be purchased.

If the user touches an information button 532 in FIG. 5A, as illustratedin screen 500 d, illustrated in FIG. 5D, information of the MFP 200, forexample, an IP address, a location, and a MAC address of the MFP 200, isdisplayed in area 537 of the content display area 530. Also, if the usertouches an input tray button 533 in FIG. 5A, as illustrated in screen500 e, illustrated in FIG. 5E, information about each tray is displayedin area 537. Furthermore, if the user touches a print report button 534in FIG. 5A, a sub menu (not illustrated) to print a system report of theMFP 200 is displayed.

By using a mobile printing application according to an exemplaryembodiment of the present general inventive concept, a user may checkstatus information of an MFP 200 and may manage various settings of theMFP 200. A method of managing settings of an MFP 200 by using a mobileprinting application, according to an exemplary embodiment of thepresent general inventive concept, will now be described in detail.

FIGS. 6A through 6C illustrate screens 600 a through 600 c to describe amethod of managing settings of an MFP 200 by using a mobile printingapplication, according to an exemplary embodiment of the present generalinventive concept. In order to manage settings of an MFP 200 on a screen600 a corresponding to a home menu 611 of FIG. 6A, a user may activate adevice settings menu by touching a device settings button 621 includedin sub tap area 620. The screen 600 a illustrated in FIG. 6A may be adefault screen when the home menu 611 is selected. Elements 610-614,620-621, and 630-634 as illustrated in FIG. 6A are the same ascorresponding elements 310-314, 320-321, and 330-334, already describedabove with reference to FIG. 3. Similarly, element 635 as illustrated inFIG. 6A is the same as the corresponding element 535, already describedabove with reference to FIG. 5A, and so a detailed description thereofwill be omitted.

FIG. 6B illustrates a screen 600 b of a mobile device 100 when thedevice settings menu is activated. An area 641 displays a messageindicating that the device settings menu is currently activated. Themobile device 100 may be set in such a way that, if a user touches thearea 641, the screen 600 b returns to the previous screen 600 a of FIG.6A. The user may check and change various settings of an MFP 200 bytouching areas 642 through 649 of FIG. 6B. For example, deviceinformation of the MFP 200 may be checked by touching the area 642, orpaper information may be checked by touching the area 643. Also, generalsettings of the MFP 200, e.g., power save, default paper size, and ecodefault mode settings, may be checked and changed by touching the area644. Supplies of the MFP 200 may be managed by touching the area 645,and an address book stored in the MFP 200 may be edited by touching thearea 646. Fax-related settings may be checked and changed by touchingthe area 647, and network-related settings may be made by touching thearea 648. Furthermore, a print report operation to print a system reportof the MFP 200 may be performed by touching the area 649.

FIG. 6C illustrates a screen 600 c in an example when a sub menu tomanage an address book of an MFP 200 is activated by touching the area646. Referring to FIG. 6C, if a user touches the area 646, a sub menu toedit the address book by individuals, e.g., “Individual” 646 a, and asub menu to edit the address book by groups, e.g., “Group” 646 b, aredisplayed between the areas 646 and 647. The user may select one of thesub menus to activate a menu to edit the address book by individuals orgroups.

FIGS. 7A through 7C are diagrams illustrating screens 700 a through 700c when print, scan, and fax menus 712, 713, and 714 are selected fromamong main menus of a mobile printing application, according to anexemplary embodiment of the present general inventive concept. Elements710-714, 720-721, and 730 as illustrated in FIGS. 7A through 7C are thesame as corresponding elements 310-314, 320-321, and 330, alreadydescribed above with reference to FIG. 3, and so a detailed descriptionthereof will be omitted.

Referring to screen 700 a illustrated in FIG. 7A, if the print menu 712is selected in a main menu area 710, a content display area 730 displaysmenus to select an image or a document to be printed. These menusinclude “Gallery” to print a photo stored in a mobile device 100,“Camera” to directly print a photo taken by the mobile device 100,“Google Docs” to print a document or an image stored in Google Docs,“Gmail” to print a document or an image received via Gmail, “Web” toprint a document or the like retrieved from the Internet, “Facebook” toprint a photo or the like stored in Facebook, “Document” to print adocument stored in the mobile device 100, and “Twitter” to output aphoto or the like stored in Twitter.

When NFC tagging is performed, a print operation may be automaticallyperformed. For example, the mobile device 100 may be set in such a waythat, if the mobile device 100 is performs NFC tagging on an NFC tag 210attached to an MFP 200 while the print menu 712 is selected from amongthe main menus and a user selects “Gallery” and then selects one ofphotos stored in “Gallery”, the mobile device 100 automaticallytransmits to the MFP 200 image data of the selected photo and a commandto perform a print operation.

When the mobile device 100 and the MFP 200 are not connected before NFCtagging is performed, if NFC tagging is performed, a Wi-Fi Directconnection between the mobile device 100 and the MFP 200 as well as thetransmission of the image data and the command may be automaticallyperformed. Otherwise, when the mobile device 100 and the MFP 200 arealready connected before NFC tagging is performed, if NFC tagging isperformed, the transmission of the image data and the command may beautomatically performed.

Referring to screen 700 b, illustrated in FIG. 7B, if the scan menu 713is selected in the main menu area 710, the content display area 730displays scan-related contents. An area 731 of content display area 730displays a list of scanned images stored in the mobile device 100, andbuttons 732 and 733 to perform preview and scan operations are displayedon the content display area 730 under the area 731. A user may perform ascan operation by putting on the MFP 200 a document to be scanned andtouching the “Scan” button 733. After the scan operation is completed, apreview operation of a scanned image may be requested by touching the“Preview” button 732.

When NFC tagging is performed, a scan operation may be automaticallyperformed. For example, the mobile device 100 may be set in such a waythat if the mobile device 100 is performs NFC tagging on the NFC tag 210attached to the MFP 200 while the scan menu 713 is selected from amongthe main menus, the mobile device 100 automatically transmits to the MFP200 a command to perform a scan operation.

When the mobile device 100 and the MFP 200 are not connected before NFCtagging is performed, if NFC tagging is performed, a Wi-Fi Directconnection between the mobile device 100 and the MFP 200 as well as thetransmission of the command may be automatically performed. Otherwise,when the mobile device 100 and the MFP 200 are already connected beforeNFC tagging is performed, if NFC tagging is performed, the transmissionof the command may be automatically performed.

Referring to screen 700 c, illustrated in FIG. 7C, if the fax button 714is selected in the main menu area 710, the content display area 730displays menus to select an image or a document to be faxed. These menusare the same as the menus to select an image or a document to beprinted, which are described above in relation to FIG. 7A.

When NFC tagging is performed, a fax operation may be automaticallyperformed. For example, the mobile device 100 may be set in such a waythat, when the fax button 714 is selected from among the main menus anda user selects “Document” and then selects one of documents stored in“Document”, if the mobile device 100 performs NFC tagging on the NFC tag210 attached to the MFP 200, the mobile device 100 automaticallytransmits to the MFP 200 the selected document and a command to performa fax operation.

When the mobile device 100 and the MFP 200 are not connected before NFCtagging is performed, if NFC tagging is performed, a Wi-Fi Directconnection between the mobile device 100 and the MFP 200 as well as thetransmission of the document and the command may be automaticallyperformed. Otherwise, when the mobile device 100 and the MFP 200 arealready connected before NFC tagging is performed, if NFC tagging isperformed, the transmission of the document and the command may beautomatically performed.

FIG. 8 is a diagram illustrating a hardware configuration of a mobiledevice 100, according to an exemplary embodiment of the present generalinventive concept. Referring to FIG. 8, the mobile device 100 mayinclude an NFC module 110, a Wi-Fi Direct interface unit 120, a userinterface unit 130, a control unit 140, an application execution unit150, and a storage unit 160. The control unit 140 may include anapplication status checking unit 141, a command generation unit 142, anda command transmission unit 143.

The NFC module 110 is an element for short-distance wirelesscommunication and may include an antenna and an NFC chipset (notillustrated). If the mobile device 100 approaches an NFC tag 210attached to an MFP 200, the NFC module 110 receives information of theMFP 200, which is stored in the NFC tag 210. In this case, the receivedinformation of the MFP 200 may include, for example, a MAC address, adevice name, an application identifier, and an encrypted PIN of the MFP200.

The Wi-Fi Direct interface unit 120 is an element to set a Wi-Fi Directconnection between the mobile device 100 and another device thatsupports Wi-Fi Direct. In an exemplary embodiment of the present generalinventive concept, the mobile device 100 sets a Wi-Fi Direct connectionto the MFP 200 via the Wi-Fi Direct interface unit 120 and transmits andreceives data and a command for mobile printing.

The user interface unit 130 displays a screen to a user and receivesvarious inputs from the user. For example, the user interface unit 130may be formed as a touch screen and, if a mobile printing application isexecuted, may display an execution screen on the touch screen and mayreceive a touch input from the user.

The control unit 140 sets a Wi-Fi Direct connection to the MFP 200,executes the mobile printing application, and generates and transforms acommand for mobile printing. The control unit 140 may allow a Wi-FiDirect connection to be set between the mobile device 100 and the MFP200 by using the information of the MFP 200, which is received by theNFC module 110, and may allow the mobile printing application to beexecuted by controlling the application execution unit 150.

The control unit 140 may control a function to be automaticallyperformed according to a status of the mobile printing application at apoint of time when the mobile device 100 performs NFC tagging on the MFP200. In more detail, when the application execution unit 150 executesthe mobile printing application, if the NFC module 110 of the mobiledevice 100 approaches the NFC tag 210 attached to the MFP 200 and thusNFC tagging is performed, the application status checking unit 141 ofthe control unit 140 checks the status of the mobile printingapplication. In this case, the status of the mobile printing applicationdenotes, for example, a menu or a file currently selected on the mobileprinting application, or a currently displayed execution screen of themobile printing application.

If the application status checking unit 141 checks the status of themobile printing application when NFC tagging is performed, the commandgeneration unit 142 generates a command corresponding to the checkedstatus, and the command transmission unit 143 transmits the generatedcommand via the Wi-Fi Direct interface unit 120 to the MFP 200. Forexample, if the status of the mobile printing application when NFCtagging is performed, which is checked by the application statuschecking unit 141, denotes that a home menu is selected from among mainmenus, the command generation unit 142 generates a command requestingvarious types of status information of the MFP 200, and the commandtransmission unit 143 transmits the generated command via the Wi-FiDirect interface unit 120 to the MFP 200. If the MFP 200 transmits thestatus information of the MFP 200 in response to the command, the mobiledevice 100 receives the status information of the MFP 200 via the Wi-FiDirect interface unit 120, and the control unit 140 displays the statusinformation on the user interface unit 130.

The storage unit 160 may store image data such as photos, as well asdocuments. The mobile device 100 may transmit to the MFP 200 image dataor a document stored in the storage unit 160, so as to request a printor fax operation, or may receive from the MFP 200 image data or adocument obtained by performing a scan operation, so as to store thereceived image data or the document in the storage unit 160.

A method of mobile printing using NFC, according to an exemplaryembodiment of the present general inventive concept, will now bedescribed in detail.

FIG. 9 is a flowchart of a method of mobile printing using NFC,according to an exemplary embodiment of the present general inventiveconcept. Referring to FIG. 9, a mobile printing application is executedon a mobile device 100 in operation 901. In this case, the mobileprinting application may be executed if a user touches an icon of themobile printing application, which may be displayed on a touch screen ofthe mobile device 100.

If the mobile printing application is executed and the mobile device 100approaches an MFP 200, the mobile device 100 performs NFC tagging andreceives information of the MFP 200 in operation 902. If the mobiledevice 100 approaches an NFC tag 210 attached to the MFP 200, an NFCmodule 110 of the mobile device 100 receives the information of the MFP200, which is stored in the NFC tag 210. In this case, the receivedinformation may include, for example, a MAC address, a device name, andan encrypted PIN of the MFP 200.

The mobile device 100 attempts to set a Wi-Fi Direct connection to theMFP 200 by using the received information of the MFP 200 in operation903. The mobile device searches 100 for a device having the received MACaddress and, if the MFP 200 is found, requests the found MFP 200 for theWi-Fi Direct connection. In this case, the Wi-Fi Direct connection maybe set if the user presses a WPS button included in the MFP 200, orinputs a PIN via a user interface of the MFP 200. Alternatively, theWi-Fi Direct connection may be automatically set without a user input ifthe mobile device 100 transmits to the MFP 200 the encrypted PINincluded in the information of the MFP 200, which is received inoperation 902. In order to set the Wi-Fi Direct connection bytransmitting the encrypted PIN, firmware of the MFP 200 should supportthe above connection method. If it doesn't, the firmware of the MFP 200may be updated to a version that supports the above connection method.Methods of updating firmware will be described in detail below withreference to FIGS. 14-18.

If the Wi-Fi Direct connection is set between the mobile device 100 andthe MFP 200, the mobile device 100 and the MFP 200 automatically performa function corresponding to a status of the mobile printing applicationwhen NFC tagging is performed, in operation 904. In other words, afunction corresponding to a menu or a file currently selected on themobile printing application when NFC tagging is performed is performed.For example, if NFC tagging is performed while a home menu is selectedfrom among main menus of the mobile printing application, the mobiledevice 100 requests the MFP 200 for status information of the MFP 200,and receives and displays the status information on a screen.Alternatively, if NFC tagging is performed while a print menu isselected from among main menus of the mobile printing application, themobile device 100 requests the MFP 200 to perform a print operation andthe MFP 200 performs the print operation.

As such, by checking a status of a mobile printing application when NFCtagging is performed and automatically performing a functioncorresponding to the status, a desired operation may be easily performedby merely performing NFC tagging without a separate user input.

FIG. 10 is a flowchart of a method of mobile printing using NFC,according to another exemplary embodiment of the present generalinventive concept.

Referring to FIG. 10, a mobile printing application is executed on amobile device 100, in operation 1001. In this case, the mobile printingapplication may be executed if a user touches an icon of the mobileprinting application, which is displayed on a touch screen of the mobiledevice 100.

If the mobile printing application is executed, it is determined whethera Wi-Fi Direct function of the mobile device 100 is on, in operation1002. If it is determined that the Wi-Fi Direct function is on(operation 1002-Y), the method proceeds to operation 1003 and the mobiledevice 100 performs NFC tagging on an MFP 200 and receives informationof the MFP 200, for example, a MAC address, a device name, and a PIN ofthe MFP 200. If it is determined that the Wi-Fi Direct function is off(operation 1002-N), the method proceeds to operation 1008 and the Wi-FiDirect function of the mobile device 100 is changed to an on state, andthen the method proceeds to operation 1003. In this case, operation 1008may be performed by displaying on a screen of the mobile device 100 amessage illustrated for example in FIG. 4A, indicating that the Wi-FiDirect function should be on to use the mobile printing application, andreceiving from the user an input to change the Wi-Fi Direct function toan on state.

A Wi-Fi Direct connection is set to the MFP 200 by using the receivedinformation of the MFP 200 in operation 1004. If the Wi-Fi Directconnection is completely set, a status of the mobile printingapplication is checked in operation 1005. In more detail, the status ofthe mobile printing application at a point of time when NFC tagging isperformed in operation 1003 is checked. In this case, the status of themobile printing application denotes, for example, a menu or a filecurrently selected on the mobile printing application, or a currentlydisplayed application screen of the mobile device 100.

A command corresponding to the status of the mobile printingapplication, which is checked in operation 1005, is generated inoperation 1006, and the generated command is transmitted to the MFP 200in operation 1007.

As such, by checking a status of a mobile printing application when NFCtagging is performed and automatically performing a functioncorresponding to the status, a desired operation may be easily performedby merely performing NFC tagging without a separate user input.

FIG. 11 is a flowchart of a method of mobile printing using NFC,according to an exemplary embodiment of the present general inventiveconcept. Specifically, FIG. 11 illustrates a case when NFC tagging isperformed while a home menu of a mobile printing application isselected.

Referring to FIG. 11, the mobile printing application is executed inoperation 1101. It is determined whether a Wi-Fi Direct function is on,in operation 1102. If the Wi-Fi Direct function is not on (operation1102-N), the method proceeds to operation 1108 and the Wi-Fi Directfunction is changed to an on state. If the Wi-Fi Direct function is on(operation 1102-Y), the method proceeds to operation 1103.

A home menu is selected from among main menus of the mobile printingapplication in operation 1103. In this case, the home menu may bemanually selected by a user, or may be set as a default menu and thusmay be selected by default when the mobile printing application isexecuted. In the latter case, operation 1103 may be omitted.

A mobile device 100 performs NFC tagging on an MFP 200 and sets a Wi-FiDirect connection to the MFP 200 in operation 1104. A process ofperforming NFC tagging and setting a Wi-Fi Direct connection has alreadybeen described above in detail, and so will not be repeated here. If theWi-Fi Direct connection is set, the mobile device 100 transmits to theMFP 200 a command to request status information, in operation 1105.Since the home menu is selected on the mobile printing application whenNFC tagging is performed in operation 1104, a command requesting thestatus information of the MFP 200 and corresponding to the home menu istransmitted. If a print, scan, or fax menu, instead of the home menu, isselected on the mobile printing application when NFC tagging isperformed, a command corresponding to the selected menu is transmitted.

If the MFP 200 transmits the status information in response to thecommand requesting the status information, the mobile device 100receives the status information in operation 1106, and displays thestatus information on a screen to allow the user to check it inoperation 1107.

As such, by including a home menu to manage information and settings ofan MFP 200 in a mobile printing application and automatically receivingand displaying status information of the MFP 200 when NFC tagging isperformed while the home menu is selected, the information and settingsof the MFP 200 may be easily managed.

When a Wi-Fi Direct connection is set between a mobile device 100 and anMFP 200, status information of the MFP 200 may be cyclically updated. Amethod thereof is illustrated in FIG. 12. Operations 1201 through 1208of FIG. 12 are respectively the same as operations 1101 through 1108 ofFIG. 11, and thus detailed descriptions thereof are not provided here.

Referring to FIG. 12, after status information of an MFP 200 isdisplayed on a screen of a mobile device 100 in operation 1207, it isdetermined whether a certain period of time has passed in operation1209. If the certain period of time has not passed (operation 1209-N),no particular operation is performed. If the certain period of time haspassed (operation 1209-Y), the method returns to operation 1205 and themobile device 100 transmits to the MFP 200 a command requesting thestatus information.

As such, by cyclically updating status information of an MFP 200 anddisplaying the status information on a mobile device 100 while themobile device 100 and the MFP 200 are wirelessly connected, a user mayeasily check the latest information of the MFP 200.

If a Wi-Fi Direct connection is set between a mobile device 100 and anMFP 200 while a home menu is selected on the mobile printingapplication, a user may not only check status information of the MFP 200but also manage various settings of the MFP 200 by using a mobileprinting application. A detailed description thereof will now beprovided with reference to FIG. 13.

FIG. 13 is a flowchart of a method of mobile printing using NFC,according to another exemplary embodiment of the present generalinventive concept. Operations 1301 through 1304, and 1308 of FIG. 13 arerespectively the same as operations 1101 through 1104, and 1108 of FIG.11, and thus detailed descriptions thereof are not provided here.

Referring to FIG. 13, an input to change settings of an MFP 200 isreceived from a user in operation 1305. The user may activate a screento manage the settings of the MFP 200, by touching a device settingsbutton while a home menu is selected on a mobile printing application,may select an item of which settings are to be changed, and then mayinput a desired setup value.

If the input to change the settings of the MFP 200 is received from theuser, a command to change the settings may be generated according to thereceived input in operation 1306, and the generated command may betransmitted to the MFP 200 in operation 1307.

As such, since a user may manage various settings of an MFP 200 by usinga mobile printing application installed in a mobile device 100, userconvenience may be improved.

As described above, in some cases, firmware of the MFP 200 needs to beupdated to set a Wi-Fi Direct connection between the mobile device 100and the MFP 200 via NFC tagging. For example, since a method in which anencrypted PIN is stored in an NFC tag 210 attached to an MFP 200 and amobile device 100 receives the PIN stored in the NFC tag 210 when NFCtagging is performed and automatically transmits the PIN to the MFP 200so as to request a Wi-Fi Direct connection does not follow the Wi-FiDirect standards, for the above-described method, firmware of the MFP200 should be updated. A method of updating firmware will now bedescribed in detail.

FIG. 14 is a diagram illustrating a process of updating firmware of anMFP 200 in a system of mobile printing using NFC, according to anexemplary embodiment of the present general inventive concept. Asillustrated in FIG. 14, the system according to the current exemplaryembodiment may further include a server 300 to update the firmware ofthe MFP 200.

Referring to FIG. 14, a mobile device 100 checks a version of thefirmware of the MFP 200 (operation S1401). In this case, in order toallow the mobile device 100 to check the version of the firmware of theMFP 200, the mobile device 100 and the MFP 200 may be connected by acable via universal serial bus (USB) ports, or may be connected viaWi-Fi Direct according to an existing method in which a user manuallyinputs a PIN to the MFP 200. As part of checking the version of thefirmware of the MFP 200, the mobile device 100 checks whether theversion of the firmware of the MFP 200 supports Wi-Fi Direct connectionvia automatic transmission of a PIN.

If the version of the firmware of the MFP 200 supports Wi-Fi Directconnection via automatic transmission of a PIN, the firmware does notneed to be updated, and the method ends. However, if the version of thefirmware of the MFP 200 does not support Wi-Fi Direct connection viaautomatic transmission of a PIN, the firmware should be updated and thusthe mobile device 100 requests the server 300 for a firmware update file(operation S1402). The server 300 receives the request and transmits thefirmware update file to the mobile device 100 (operation S1403), and themobile device 100 transmits the received firmware update file to the MFP200 (operation S1404).

The MFP 200 receives the firmware update file and updates the firmware,and a PIN is encrypted and stored in an NFC tag 210 attached to the MFP200 (operation S1405). In this case, the PIN may be stored in the NFCtag 210 in various ways. For example, the user may check the PIN set tothe MFP 200 by using a “Print Report” function of the MFP 200, and maystore the checked PIN value in the NFC tag 210. Alternatively, the usermay store a desired PIN value in the NFC tag 210 and the PIN value ofthe MFP 200 may be changed to correspond to the stored PIN value. Inthis case, for security's sake, the PIN is encrypted before being storedin the NFC tag 210.

If the mobile device 100 NFC-tags the MFP 200 after the firmware isupdated and the PIN is stored in the NFC tag 210 (operation S1406), anNFC module 110 of the mobile device 100 receives information of the MFP200, for example, a MAC address, a device name, and a PIN of the MFP200, from the NFC tag 210 attached to the MFP 200 (operation S1407).Then, the mobile device 100 transmits to the MFP 200 the PIN and arequest for a Wi-Fi Direct connection by using the received informationof the MFP 200 (operation S1408). Since the updated firmware of the MFP200 supports Wi-Fi Direct connection via automatic transmission of aPIN, the PIN received from the mobile device 100 is compared to the PINset to the MFP 200 in operation S1409 and, if the PINs are identical,the Wi-Fi Direct connection is accepted in operation S1410.

Although the mobile device 100 receives the firmware update file fromthe server 300 and then transmits the firmware update file to the MFP200 in the firmware update method of FIG. 14, as illustrated in FIG. 15,the mobile device 100 may not receive the firmware update file but mayrequest the server 300 to transmit the firmware update file directly tothe MFP 200. Referring to FIG. 15, if the mobile device 100 requests theserver 300 to update the firmware (operation S1502), the server 300transmits a firmware update file directly to the MFP 200 instead of themobile device 100 (operation S1503). The other operations of FIG. 15,i.e., operations S1501 and S1504 through S1509 are the same as thecorresponding operations S1401 and S1405 through S1410 of FIG. 14, andthus detailed descriptions thereof are not provided here.

Unlike the above exemplary embodiments of FIGS. 14 and 15, a mobiledevice 100 may not be involved and an MFP 200 itself may compare aversion of installed firmware to the latest version of firmware storedin a server 300 and, if the versions are not identical, may request theserver 300 for a firmware update file so as to update the firmware.

FIG. 16 is a diagram illustrating a hardware configuration of a mobiledevice 100, according to another exemplary embodiment of the presentgeneral inventive concept. The mobile device 100 of FIG. 16 may includean NFC module 110, a Wi-Fi Direct interface unit 120, a user interfaceunit 130, a control unit 140, an application execution unit 150, and astorage unit 160. From among them, the control unit 140 may include afirmware checking unit 144 and a firmware update management unit 145.

The elements other than the firmware checking unit 144 and the firmwareupdate management unit 145 are the same as those illustrated in FIG. 8,and so only the firmware checking unit 144 and the firmware updatemanagement unit 145 will be described in detail here.

The firmware checking unit 144 checks whether a version of firmware ofan MFP 200 supports Wi-Fi Direct connection via automatic transmissionof a PIN. In this case, in order to allow the firmware checking unit 144included in the mobile device 100 to check the version of the firmwareof the MFP 200, a connection for data transmission and reception shouldbe set between the mobile device 100 and the MFP 200. Accordingly, whileUSB ports of the mobile device 100 and the MFP 200 may be connected by acable, the firmware checking unit 144 may check the version of thefirmware of the MFP 200. Here, other wire or wireless connection methodsaside from USB ports may also be used. The firmware checking unit 144transmits a checking result to the firmware update management unit 145.

If the checked version of the firmware of the MFP 200 supports Wi-FiDirect connection via automatic transmission of a PIN, the firmware doesnot need to be updated and thus the firmware update management unit 145does not perform any operation. However, if the checked version of thefirmware of the MFP 200 does not support Wi-Fi Direct connection viaautomatic transmission of a PIN, the firmware of the MFP 200 is updated.In other words, the firmware update management unit 145 requests aserver 300 for a firmware update file, receives the firmware updatefile, and transmits the received firmware update file to the MFP 200.Alternatively, the firmware update management unit 145 may not receivethe firmware update file from the server 300 but may request the server300 to transmit the firmware update file directly to the MFP 200.

FIGS. 17 and 18 are flowcharts of methods of updating firmware of an MFP200 in a system of mobile printing using NFC, according to exemplaryembodiments of the present general inventive concept.

Referring to FIG. 17, a version of firmware installed in an MFP 200 ischecked in operation 1701, and it is determined whether the version ofthe firmware supports Wi-Fi Direct connection via automatic transmissionof a PIN, in operation 1702. If the version supports Wi-Fi Directconnection via automatic transmission of a PIN (operation 1702-Y), themethod proceeds to operation 1707. Otherwise (operation 1702-N), themethod proceeds to operation 1703. A mobile device 100 requests a server300 for a firmware update file in operation 1703, and receives thefirmware update file from the server 300 in operation 1704. The mobiledevice 100 transmits the received firmware update file to the MFP 200 inoperation 1705. The MFP 200 updates the firmware by using the firmwareupdate file received from the mobile device 100, in operation 1706. Inthis case, when the firmware is updated, a PIN is encrypted and storedin an NFC tag 210 attached to the MFP 200.

If the firmware of the MFP 200 is completely updated to a version thatsupports Wi-Fi Direct connection via automatic transmission of a PIN,then in operation 1707 when the mobile device 100 performs NFC taggingon the MFP 200, the mobile device 100 receives from the NFC tag 210 thePIN together with information of the MFP 200, for example, a MAC addressand a device name of the MFP 200. The mobile device 100 requests the MFP200 to connect via Wi-Fi Direct by using the received information of theMFP 200, and transmits the received PIN to the MFP 200, in operation1708. If the Wi-Fi Direct connection is requested in operation 1708,then in operation 1709 the MFP 200 determines whether the PINtransmitted from the mobile device 100 is identical to the PIN set tothe MFP 200 and, if the PINs are identical (operation 1709-Y), acceptsthe Wi-Fi Direct connection in operation 1710.

Although the mobile device 100 receives the firmware update file fromthe server 300 and then transmits the firmware update file to the MFP200 in the firmware update method of FIG. 17, as illustrated in FIG. 18,the mobile device 100 may merely request the server 300 to transmit thefirmware update file directly to the MFP 200.

Referring to FIG. 18, a version of firmware installed in an MFP 200 ischecked in operation 1801, and it is determined whether the version ofthe firmware supports Wi-Fi Direct connection via automatic transmissionof a PIN, in operation 1802. If the version supports Wi-Fi Directconnection via automatic transmission of a PIN, the method proceeds tooperation 1806. Otherwise, the method proceeds to operation 1803. If amobile device 100 requests a server 300 to update the firmware inoperation 1803, the server 300 transmits a firmware update file directlyto the MFP 200 in operation 1804. The MFP 200 updates the firmware byusing the firmware update file received from the server 300, inoperation 1805. In this case, when the firmware is updated, a PIN isencrypted and stored in an NFC tag 210 attached to the MFP 200.

If the firmware of the MFP 200 is completely updated to a version thatsupports Wi-Fi Direct connection via automatic transmission of a PIN,when the mobile device 100 NFC-tags the MFP 200, the mobile device 100receives from the NFC tag 210 the PIN together with information of theMFP 200, for example, a MAC address and a device name of the MFP 200, inoperation 1806. The mobile device 100 requests the MFP 200 for a Wi-FiDirect connection by using the received information of the MFP 200, andtransmits the received PIN to the MFP 200, in operation 1807. If theWi-Fi Direct connection is requested in operation 1807, then inoperation 1808 the MFP 200 determines whether the PIN transmitted fromthe mobile device 100 is identical to the PIN set to the MFP 200 and, ifthe PINs are identical, accepts the Wi-Fi Direct connection in operation1809.

As such, by updating firmware of an MFP 200, a Wi-Fi Direct connectionmay be automatically set between a mobile device 100 and the MFP 200without requiring a user to manually input a PIN.

As described above, according to the one or more of the above exemplaryembodiments of the present general inventive concept, a user may easilyperform mobile printing by merely performing NFC tagging. Also,information of an MFP 200 may be checked and various settings of the MFP200 may be managed by using a mobile printing application executed on amobile device 100.

The present general inventive concept can also be embodied ascomputer-readable codes on a computer-readable medium. Thecomputer-readable medium can include a computer-readable recordingmedium and a computer-readable transmission medium. Thecomputer-readable recording medium is any data storage device that canstore data as a program which can be thereafter read by a computersystem. Examples of the computer-readable recording medium include asemiconductor memory, a read-only memory (ROM), a random-access memory(RAM), a USB memory, a memory card, a Blu-Ray disc, CD-ROMs, magnetictapes, floppy disks, and optical data storage devices. Thecomputer-readable recording medium can also be distributed over networkcoupled computer systems so that the computer-readable code is storedand executed in a distributed fashion. The computer-readabletransmission medium can transmit carrier waves or signals (e.g., wiredor wireless data transmission through the Internet). Also, functionalprograms, codes, and code segments to accomplish the present generalinventive concept can be easily construed by programmers skilled in theart to which the present general inventive concept pertains.

It should be understood that the exemplary embodiments described hereinshould be considered in a descriptive sense only and not for purposes oflimitation. Descriptions of features or aspects within each exemplaryembodiment should typically be considered as available for other similarfeatures or aspects in other exemplary embodiments.

Although a few embodiments of the present general inventive concept havebeen shown and described, it will be appreciated by those skilled in theart that changes may be made in these embodiments without departing fromthe principles and spirit of the general inventive concept, the scope ofwhich is defined in the appended claims and their equivalents.

What is claimed is:
 1. A method of mobile printing using near fieldcommunication (NFC), the method comprising: receiving, via an NFCmodule, NFC tag information of an image forming apparatus at a mobileterminal via the NFC; establishing, via a WiFi unit, a wirelessconnection with the image forming apparatus using the NFC taginformation of the image forming apparatus; and transmitting, via theWiFi unit, a fax command selected on a mobile printing application anddata to be output as a fax according to the fax command instructing tooutput the data as the fax, via the wireless connection.
 2. The methodof claim 1, further comprising: receiving status information of theimage forming apparatus if NFC tagging is performed while a home menu isselected, wherein the mobile printing application comprises the homemenu to manage the image forming apparatus.
 3. The method of claim 2,wherein the receiving of the status information comprises cyclicallyreceiving status information from the image forming apparatus so as toupdate the status information.
 4. The method of claim 1, furthercomprising changing settings of the image forming apparatus by using themobile printing application.
 5. The method of claim 4, wherein thechanging of the settings of the image forming apparatus comprises:displaying at the mobile terminal a screen to manage the settings of theimage forming apparatus according to a selection of a user; andtransmitting from the mobile terminal a command corresponding to aninput to the image forming apparatus via the wireless connection, if aninput to change the setting of the image forming apparatus is receivedfrom the user.
 6. The method of claim 1, wherein, if the mobile printingapplication is executed, a home menu is selected by default.
 7. Themethod of claim 1, wherein the image forming apparatus wirelesslyconnected via NFC tagging while a home menu is selected on the mobileprinting application is set as an apparatus to perform all mobileprinting operations.
 8. The method of claim 1, wherein the NFC taginformation of the image forming apparatus comprises a media accesscontrol (MAC) address, and wherein the establishing of the wirelessconnection comprises: searching for an apparatus corresponding to thereceived MAC address; and transmitting a request for the wirelessconnection to the image forming apparatus if the image forming apparatusis found establishing the wireless connection with the image formingapparatus.
 9. The method of claim 8, wherein the NFC tag information ofthe image forming apparatus further comprises a personal identificationnumber (PIN), wherein the transmitting of the request for the wirelessconnection comprises transmitting the received PIN, and wherein theestablishing of the wireless connection comprises establishing thewireless connection with the image forming apparatus if it is determinedthat the PIN is identical to the PIN set to the image forming apparatus.10. A non-transitory computer-readable recording medium to containcomputer-readable codes as a program to execute the method of claim 1.11. A mobile device using near field communication (NFC), the mobiledevice comprising: a NFC module configured to receive information froman NFC tag; a wireless unit configured to wirelessly connect to an imageforming apparatus; and a processor programmed with a mobile printingapplication configured to: receive, via the NFC module, NFC taginformation of an image forming apparatus, establish, via the wirelessunit, a wireless connection with the image forming apparatus using theNFC tag information of the image forming apparatus, and transmit a faxcommand and data to be output as a fax according to the fax commandinstructing to output the data as the fax, via the wireless connection.12. The mobile device of claim 11, further comprising: a user interfaceunit configured to display a fax menu on the mobile printingapplication.
 13. The mobile device of claim 11, wherein the processorprogrammed with the mobile printing application is further configured tochange settings of the image forming apparatus.
 14. The mobile device ofclaim 13, wherein, in response to changing the settings of the imageforming apparatus, the user interface unit is further configured todisplay a screen to manage the settings of the image forming apparatusaccording to a selection of a user, and wherein, in response to changingthe settings of the image forming apparatus, the wireless unit isfurther configured to transmit a command corresponding to the input tothe image forming apparatus via the set wireless connection, if an inputto change the setting of the image forming apparatus is received fromthe user.
 15. The mobile device of claim 11, wherein, when the mobileprinting application is executed, a home menu is selected by default.16. The mobile device of claim 11, wherein the image forming apparatuswirelessly connected via NFC tagging while a home menu is selected onthe mobile printing application is set as an apparatus to perform allmobile printing operations.
 17. The mobile device of claim 11, whereinthe NFC tag information of the image forming apparatus comprises a mediaaccess control (MAC) address, and wherein the setting of the wirelessconnection comprises: searching for an apparatus corresponding to thereceived MAC address; transmitting a request for the wireless connectionto the image forming apparatus if the image forming apparatus is found;and establishing the wireless connection with the image formingapparatus.
 18. The mobile device of claim 17, wherein the NFC taginformation of the image forming apparatus further comprises a personalidentification number (PIN), wherein the transmitting of the request forthe wireless connection comprises transmitting the received PIN, andwherein the establishing with the image forming apparatus of thewireless connection comprises establishing with the image formingapparatus the wireless connection if it is determined that the PIN isidentical to the PIN set to the image forming apparatus.